Almost no third instar larvae expressing Mmp1E225A.f1.Scer\UAS under the control of Scer\GAL4αTub84B.PL display broken tracheal dorsal trunks. 88% survive to pupariation. The majority of dissected pupae show defects in head eversion.
Expression of Mmp1E225A.f1.Scer\UAS under the control of Scer\GAL4αTub84B.PL strongly enhances the phenotype of Mmp1Q273stop/Mmp1W439stop transheterozygous mutant third instar larvae. 15% display broken tracheal dorsal trunks and appear sluggish, and the majority of dissected pupae show defects in wing and head eversion. These phenotypes are stronger than either Mmp1Q273stop/Mmp1W439stop or Scer\GAL4αTub84B.PL driving Mmp1E225A.f1.Scer\UAS alone.
Very few third instar larvae expressing Mmp1E225A.f1.Scer\UAS under the control of Scer\GAL4btl.PS display broken tracheal dorsal trunks.
Scer\GAL4elav.PU- or Scer\GAL4repo.PU-mediated expression of Mmp1E225A.f1.Scer\UAS results in aberrant ISNb morphology - defasciculation with loose bundling and ectopic branches.
Co-expression of Mmp1E225A.f1.MtnA, with NijAA.MtnA.T:Ivir\HA1 suppresses the loss of cellular adherence observed in NijAA.MtnA.T:Ivir\HA1 mutants.
"UAS-Mmp1.f1E225A" is transfected into S2 cells to study cell adhesion pathways.